1 | /* Case-insensitive string comparison functions in C locale. |
2 | Copyright (C) 1995-1996, 2001, 2003, 2005, 2009-2019 Free Software |
3 | Foundation, Inc. |
4 | |
5 | This program is free software; you can redistribute it and/or modify |
6 | it under the terms of the GNU General Public License as published by |
7 | the Free Software Foundation; either version 3, or (at your option) |
8 | any later version. |
9 | |
10 | This program is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | GNU General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU General Public License |
16 | along with this program; if not, see <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #ifndef C_STRCASE_H |
19 | #define C_STRCASE_H |
20 | |
21 | #include <stddef.h> |
22 | |
23 | |
24 | /* The functions defined in this file assume the "C" locale and a character |
25 | set without diacritics (ASCII-US or EBCDIC-US or something like that). |
26 | Even if the "C" locale on a particular system is an extension of the ASCII |
27 | character set (like on BeOS, where it is UTF-8, or on AmigaOS, where it |
28 | is ISO-8859-1), the functions in this file recognize only the ASCII |
29 | characters. More precisely, one of the string arguments must be an ASCII |
30 | string; the other one can also contain non-ASCII characters (but then |
31 | the comparison result will be nonzero). */ |
32 | |
33 | |
34 | #ifdef __cplusplus |
35 | extern "C" { |
36 | #endif |
37 | |
38 | |
39 | /* Compare strings S1 and S2, ignoring case, returning less than, equal to or |
40 | greater than zero if S1 is lexicographically less than, equal to or greater |
41 | than S2. */ |
42 | extern int c_strcasecmp (const char *s1, const char *s2) _GL_ATTRIBUTE_PURE; |
43 | |
44 | /* Compare no more than N characters of strings S1 and S2, ignoring case, |
45 | returning less than, equal to or greater than zero if S1 is |
46 | lexicographically less than, equal to or greater than S2. */ |
47 | extern int c_strncasecmp (const char *s1, const char *s2, size_t n) |
48 | _GL_ATTRIBUTE_PURE; |
49 | |
50 | |
51 | #ifdef __cplusplus |
52 | } |
53 | #endif |
54 | |
55 | |
56 | #endif /* C_STRCASE_H */ |
57 | |